Submitted by Anonymous (not verified) on Thu, 03/28/2024 - 18:54 Mount Tammany 5.15 miles. Columbia, Warren County, NJ. Located in the Worthington State Forest (just below the Water Gap), the hike to the top of ... External URL https://www.google.com/url?rct=j&sa=t&url=https://getoutsidenj.com/places/39-pa… Log in or register to post comments